Separation of CO2 from flue gas using hollow fiber membrane contactors
中空纤维膜接触器分离烟气中CO2

CO2 separation from simulative flue gas has been investigated experimentally with hollow fiber membrane contactor. In this experimentation, two blended absorption solutions which including MDEA+MEA and MDEA+ amino acid salts are tested. Some factors that influencing the CO2 removal efficiency and mass transfer rate are tested, such as different absorption solutions, concentration and CO2 loaded of absorbent, and concentration of carbon dioxide in the flue gas. The results show that the removal efficiency and mass transfer rate is improved when adding MEA and amino acid salts as additions into aqueous MDEA. Compared with aqueous MDEA, the removal efficiency of blended absorption solutions increased 200%, and the mass transfer rate increased 238%. With MEA as addition, the mass transfer rate of the blended absorption solution was comparatively better and the maximum mass transfer rate was 1.7 mol?m-2?h-1.